CVE-2026-80147: Stack-based Buffer Overflow in LANTRONIX SLC8000
Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow vulnerability that allows authenticated attackers to potentially execute arbitrary code by exploiting an undocumented mfc eeprom write command that copies unbounded user input into a bounded stack buffer before passing it to a system() call. Attackers can authenticate as any user to the terminal or CLI interface and supply an oversized input to trigger the overflow, potentially achieving complete loss of confidentiality, integrity, and availability on the affected device and impacting downstream serial-attached devices.
AI Analysis
Technical Summary
Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow vulnerability. The flaw arises from an undocumented mfc eeprom write command that copies unbounded user input into a bounded stack buffer before passing it to a system() call. Authenticated attackers can exploit this by authenticating to the terminal or CLI interface and supplying oversized input, potentially executing arbitrary code and causing complete loss of confidentiality, integrity, and availability on the affected device and downstream serial-attached devices.
Potential Impact
Successful exploitation allows authenticated attackers to execute arbitrary code on the device, leading to full compromise of confidentiality, integrity, and availability. This can affect the device itself and any serial-attached downstream devices, potentially causing severe operational disruption.
Mitigation Recommendations
No official patch or remediation information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the terminal or CLI interfaces to trusted users only and monitor for unauthorized authentication attempts.
CVE-2026-80147: Stack-based Buffer Overflow in LANTRONIX SLC8000
Description
Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow vulnerability that allows authenticated attackers to potentially execute arbitrary code by exploiting an undocumented mfc eeprom write command that copies unbounded user input into a bounded stack buffer before passing it to a system() call. Attackers can authenticate as any user to the terminal or CLI interface and supply an oversized input to trigger the overflow, potentially achieving complete loss of confidentiality, integrity, and availability on the affected device and impacting downstream serial-attached devices.
CVSS v4.0
Score 9.4critical
Affected software
LANTRONIX
SLC8000
LANTRONIX
EMG8500
LANTRONIX
EMG7500
LANTRONIX
SLB882
LANTRONIX
SLCx-03
LANTRONIX
SLCx-02
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow vulnerability. The flaw arises from an undocumented mfc eeprom write command that copies unbounded user input into a bounded stack buffer before passing it to a system() call. Authenticated attackers can exploit this by authenticating to the terminal or CLI interface and supplying oversized input, potentially executing arbitrary code and causing complete loss of confidentiality, integrity, and availability on the affected device and downstream serial-attached devices.
Potential Impact
Successful exploitation allows authenticated attackers to execute arbitrary code on the device, leading to full compromise of confidentiality, integrity, and availability. This can affect the device itself and any serial-attached downstream devices, potentially causing severe operational disruption.
Mitigation Recommendations
No official patch or remediation information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the terminal or CLI interfaces to trusted users only and monitor for unauthorized authentication attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-25T20:43:54.261Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab29fbaf7a7c541065ca866
Added to database: 09/22/2026, 15:33:14 UTC
Last enriched: 09/22/2026, 15:48:27 UTC
Last updated: 09/23/2026, 01:58:06 UTC
Views: 11
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